# #51cdb2

A color — neutral. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#51cdb2`
- RGB: rgb(81, 205, 178)
- HSL: hsl(167, 55%, 56%)
- OKLCH: oklch(0.772 0.117 176.1)
- Relative luminance: 0.4863
- Nearest named color: mediumaquamarine (#66cdaa, Δ 1.691) — https://brandsweets.com/colors/mediumaquamarine
- Moods: neutral
- Page: https://brandsweets.com/colors/51cdb2

## Tints & shades

- Tints (toward white): #61d1b9, #71d6c0, #84dbc9, #94e0d0, #a4e5d7, #b4e9de, #c4eee5, #d7f4ed, #e7f8f4, #f7fdfb
- Shades (toward black): #3dc7a9, #35b69a, #2e9e86, #288a75, #227764, #1d6354, #174f43, #10372f, #0a241e, #05100d

## Harmonies

- Complementary: #cd516c
- Analogous: #51cd74, #51aacd
- Triadic: #b251cd, #cdb251
- Split-complementary: #cd51aa, #cd7451
- Tetradic: #7451cd, #cd516c, #aacd51

## Colors that go with #51cdb2

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #51cdb2: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Canopy (https://brandsweets.com/palettes/cool#canopy), Lagoon (https://brandsweets.com/palettes/vivid#lagoon), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern). — https://brandsweets.com/colors/charcoal
- **Blue** #0000ff [pool] — 4 real palettes, including Canva's brand system and Unity's brand system put Blue beside #51cdb2, as the accent. Seen in: Canva (https://brandsweets.com/colors/brands/canva-com), Unity (https://brandsweets.com/colors/brands/unity-com), Uber (https://brandsweets.com/colors/brands/uber-com), Minecraft (https://brandsweets.com/colors/brands/minecraft-net). — https://brandsweets.com/colors/blue
- **Crimson** #dc143c [pool] — Crimson is paired with #51cdb2 in 5 real palettes, including Tiffany & Co.'s brand system and Riot Games's brand system, as the supporting colour. Seen in: Tiffany & Co. (https://brandsweets.com/colors/brands/tiffany-com), Riot Games (https://brandsweets.com/colors/brands/riotgames-com), Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Frost & Ember (https://brandsweets.com/palettes/bold#frost-and-ember). — https://brandsweets.com/colors/crimson
- **Dark Orange** #ff8c00 [harmony, pool: triadic] — Dark Orange completes a triad with #51cdb2 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: PayPal (https://brandsweets.com/colors/brands/paypal-com), Playground (https://brandsweets.com/palettes/bold#playground), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #51cdb2: 4 real palettes, including Astro's brand system and Prime Video's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Prime Video (https://brandsweets.com/colors/brands/primevideo-com), Remix (https://brandsweets.com/colors/brands/remix-run), Salesforce (https://brandsweets.com/colors/brands/salesforce-com). — https://brandsweets.com/colors/deepskyblue
- **Mustard Yellow** #ffdb58 [pool] — 4 real palettes, including Crayon Box and Fresh Juice put Mustard Yellow beside #51cdb2, as the accent. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Fresh Juice (https://brandsweets.com/palettes/playful#fresh-juice), Meadow (https://brandsweets.com/palettes/light#meadow), Citrus Grove (https://brandsweets.com/palettes/warm#citrus-grove). — https://brandsweets.com/colors/mustard
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #51cdb2 in 4 real palettes, including Docker's brand system and Khan Academy's brand system, as the supporting colour. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Khan Academy (https://brandsweets.com/colors/brands/khanacademy-org), Brilliant (https://brandsweets.com/colors/brands/brilliant-org), Confluent (https://brandsweets.com/colors/brands/confluent-io). — https://brandsweets.com/colors/royalblue
- **Taupe** #483c32 [pool] — Taupe is paired with #51cdb2 in 21 real palettes, including Crayon Box and Resort, as the text colour against it. Seen in: Crayon Box (https://brandsweets.com/palettes/playful#crayon-box), Resort (https://brandsweets.com/palettes/light#resort), Rain Garden (https://brandsweets.com/palettes/cool#rain-garden), Mint Chip (https://brandsweets.com/palettes/light#mint-chip). — https://brandsweets.com/colors/taupe

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 1.96:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #26826e (4.67:1); AA: background → #4a4a4a (4.53:1); AAA: text → #1d6354 (7.08:1); AAA: background → #2b2b2b (7.23:1)
- On black (#000000): 10.73:1 — AA pass, AA-large pass, AAA pass

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/51cdb2-a2bebb-d459af-1f2a2d-e9f1ec?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#51cdb2" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.